Using Yahoo Small Business to send emails

Per Yahoo's knowledgebase at 
The settings in CDE's program to send email is: 
SMTP Server:
Username:   <Full business email address>
Password:  <Your app password> - Please see Yahoo's knowledgebase regarding 3rd Party App Passwords
Use Advanced Settings to set 
SMTP Server Port:  Yes
SMTP Server Port:465
Email Server requires SSL and/or TLS Mode: Yes
SSL/TLS Start Mode: Automatic
Important: Your Yahoo Business Account Security must be configured to allow apps that use less secure sign in. If this is disabled, the CDE program will usually receive a res